Combination door-bolt.



W. A. BAKER.

COMBINATION DOOR BOLT.

APPLICATION FILED APR. 27, 1914.

1 O9, 8 1 5. Patented Sept. 8, 1914'.

2 SHEETSSHBET l.

Mmmom THE NORRIS PETERS CO., PHOTO-LITHQ, WASIHINGION. D. C.

W. A. BAKER.

COMBINATION DOOR BOLT.

APPLICATION FILED APR.27,1914.

Patented Sept. 8, 1914 2 SH EETSSHEET 2 5 5 3 4. 2 z m /H 1: w. W a M a 7 M .9 JILJF F Z M w w W M Q M 8 2 w -/6 a m m 4 .9 a u. z z w Wiheooao YHE NORRIS PETERS 50.. PHO1DLITHO-, WASHINGTON. D.

of Ooloma, in the county of Berrien and invention, such that others lmayunderstand "the door except when the parts of the device are made to assume'a certaln predetermined I inner side thereof, and with the parts in nn- U I D sr rEs P TEN OFFICE.

WILLIAM A. BAKER, or, GOLQMA,:MIGHIGAN. i

' ooivr'niivarizon ij'oomsom.

To all 21-71 am it may concern v I Be it known that I, lVlLLIAM A. BAKER, a citizen of the United States,"and a resident State of Michigan, have invented'a certain new, useful, and Improved Combination Door-Bolt, of which the following is a specification, which, taken in connection with the accompanying drawings, makes a full disclosure of the construction and operation of a preferred embodiment of my the same.

This invention relates to are used'to lock the door against opening, and it is the primary object and purposeiof the invention to provide a bolt ofsuch type that maybe manually operated for-"locking and unlocking the door fromitheinside in the usual and ordinary nanner'that sliding locking bolts are operated, but which may also be operated from the outside also and moved-manually to lock the door butwhich cannot bemoved from the outside to unlock position, the device including combination lock elements-which must be set at proper positions for the unlocking of the-door from the outside..' It is a further object of the invention to provide a combination bolt of this type'in which the combination can be easily [and readily changed at will,and one flin which the setting of the combination in proper place may be readily-accomplished whether or not there is light suiiicient to observe the placing of the parts.

It is a further object to provide a device of this character in which no springs or other parts liable to get out'of order. are used. 1

Further objects and purposes,-together i derstanding is had of the construction of the embodiment shown in the drawings and in' which,

Figure 1 is an elevationshowing my improved door bolt appliedto a dooron the locln'ng position. Fig. 2 is a'view from'the opposite side of the door and showing the outside portions of 'thedevice by which the combination is set at proper'place, Fig-3 is a view of the inner portion ofthe devicedoor bolts which tion, and the coverconcealing the elements being removed 'to disclosethem. Fig. 4 is a viewlooking down onthe locking bolt Specificationof Letters Patent. PathtedSept, 8, 1914 Application filed April 27, 1914. Serial No.834,621; a i

used. F ig.= 5 is a side viewof the three ele' ments used in each Offthe'anembers' of the combination lock, and separated from each other. Fig. 6 is aviewsimilar to Fig. 1ofthelocking device withthe parts in locking position. Fig. 7 isfajsection taken centrally through thedoor and locking bolt construe tionapplied theretoff Similar referencevnumerals'refer to similarparts throughouttheseveral views of the drawings In theembodimentshown, the door l casting 2 therefor are shownin fragmentary I portions and suflicient. only to illustrate the attachment of the device thereto, the easing having a socket ii attached thereto to re- I ceive the endfof the'locking bolt. 4 in the v usual; manner of sliding bolt locks; The combinat on door bolt is secured to the door, ltlncluding a-boX like casing 5 in the upper portion 'of whichthelboltfais located, said casing being provided'with a cover'6 which may be detachably secured tolthe casing'b y screws or other equivalent fastening means passing through the'cover and into lugs 7 provided asshown' in the casing 5." Such casing has upper-and lower sides8 3116.19 and endpieces 10 which are cut away near their upper portionsto permit theexten'sion of the bolt/4 therethrough and its niovenents upjand'down withinthe casing as it is raised by the tumblers'or disks 11 or drops as such disks o'ccupv certain positions as hereafter described. When the bolt is in iits uppermostposition, its upper edge'lies closely adjacent the underside oftheupper g side 8 of the casing.v

"Below the bolt4 inside the casing are powith new and improved construction for isitioned a plurality of disks or tumblers 11 attaining the same will be apparent "as un integral with which is a raised portion 13 each 'eomprisingadisk like body portion 12 formedas a raised ringbut with a series of depressions 14 formed therein,hten in number asshown. Each tumbler 11 is provided ;with a cut away; section at its outer edge through such holes and through continua- @tions thereof through the door 1. 'a rod 16 extends having a laterally bent end 17 which said rods as centers.

I centersthereof. The number of tumblers 11 is adapted to seat in any one of the depressions 14: formed in the tumbler With which it is associated. On the outer side of the door, a plate 18 is attached through which therods 16 extend, said plate having a series of raised lugs 19 thereon ten in number around each rod 16 and extending radially from A. short distance outward from the lugs eachrod 16 has attached thereto an operating member 20 comprised of a central cylindrical portion to receive the end of the rod 16 and oppositely extending wings 21 integral with the central por-. tion, one of said wings to each member 20 being notched as at 22 to distinguish it from its companion'wing. It will be evident that the tumblers 11 may be turned within the casing-5 by turning of the operating members 20, and that by lmowing the relation that the notches in said tum blers bear to the position of the operating members 20 with reference tothe raised projections or lugs on the outside plate 18, it will be possible to turn the tumblers 11 and stop them at a predetermined position with the notches therein located at the upper sides of the tumblers and directly above the tobe used may be varied but I have shown three similar in construction in allrespects except that the center one is provided with an integral projecting finger23- extending beyond the edges of the said tiunbler. For convenience when three tumblers are used thecentral one is the one-to be provided with the. finger, but :this is not essential. Any other would do as well.

The bolt 4 on its lower edgeis provided with a series of downwardly extending pointed projections 2ft one; for each tumbler and so located with reference to each other that when all of the tumblers are positioned with their notches at the upper sides thereof, the said projections will be directly above said notches and will enter therein, the bolt 4 dropping with the entrance. The central projections 24 is raised a short distance above the body of the bolt so that the finger 23 as the central tumbler is turned will strike against said raised portion whereby the bolt may be operated in the direction of its length as will be apparent, and in either direction from its central position shownin Fig. 3. Immediately above the central projection 24, a pin 25 is fixedly secured to the bolt and extends laterally therefrom through the' opening 26 in the cover 6 of the casing, said pin being provided with a head 27 for operation of the bolt manually as indicated. The opening 26 in the cover plate is substantially semi-eliptical in form,having a lower horizontal boundary and an upper curved boundary as shown, and attached to the plate 6 toeither side of the opening and a short distance thereabove arethe two drop catches 28 extending toward each other from their point of attachment to the cover plate 6 but terminating so as to leave a space between the ends of said catches, this space being midway between the ends of the opening 26. The catches 28 are pivotally attached and may be turned on their pivots, the tendency being, however for such catches to drop by gravity, and to limit the drop, stops 29 are provided and secured to the plate 6 below the drop catches said stops permitting ready upward movement of the catches but limiting the downward drop.

lVhen in lowermost position, the ends or the I drop catches cover the upper portion of the opening 26.

WVith this construction in mind, the operation thereof will be evident. From the in ner side of the door, the locking bolt may be manually operated so that its end will be received in the socket 8, the bolt being raised in this operation by reason of the projections 24 riding on the outer upper edgesof the tumblers 11 and the pin 25 rising and striking against the under edge of one of the drop catches 28 untiLit passes the end thereof, upon which the catch will drop, the pin being between the ends of the drop catches 28 so that the bolt is stopped from it has ends extending equally distant to each end of the box or casing 5, this permitting the devlce to be attached to any door no 'matter how it is mounted to swing, the bolt in effect being bi-lateral and capable of use in either direction. From the inner side of the door whenthe bolt isto be carried back to unlocked position, the proper drop latch28 is lifted and by pressure on the head 27, the bolt may be carried so that its end disengages from the socket, leaving the doorunlocked. It is therefore evident 1 that'from the inside, the bolt is capable of .as easy operation as the ordinary sliding bolt, and that it may be manually operated in a very similar manner. Suppose, however, it is desired to shut and lock the door from the outside. In such case, the door is closed, and the central tumbler rotated through its operating member 20, bringing the finger 23 into cont-act with the projec- ,tion 24, whereupon on further rotation, the projection and bolt will be moved laterally, the bolt rising in the same manner as before statedand the pin 25 carried laterally until it strikes the end of the oppositely disposed drop latch 28, the other drop latch having been elevated by the pin and dropping be hind it as the bolt moves far enough to carry the pin beyond the end of said drop latch. The bolt-will thereupon have entered at its end into the socket 3 locking the door from outside entrance eXceptW-in the following manner, it a being evident that the rotation of the central tumbler and the striking of the finger 23 .against thecentral projection 24 will be without effect after the pin 25 is once positioned between the ends of the drop latches 28.." In order to unlock the door from the outside, the bolt.

tumblers so that the notch-portions 15 thereofwill be in positionto receive the projections 24 of the bolt 4L, whereupon the bolt, will lower, and by turning the tumblers'or any one of them inthe properdirection, the bolt may be carriedto unlocking position. It is therefore necessary to know how to position the tumblers and this can beknown only by a knowledge of the proper places:

to turn the operating members 20 therefor with reference to the lugs 19 on 'the index dials positioned under each operating member 20. These lugs 19, ten in number, may be numbered from 1 to 9,. the last one being denoted as the 0 number, and the first lug numbered 1 may be positioned on the dial in the same position as the 1- of a clock dial for easy remembering of the lugs. Of course, if desired, the plate 18 may be provided vwithnumbers" adjacent the lugs 19 for use in the daytime, but the raised projecting lugs 19 may be used when it is dark quite as well, by the sense of touch to locate the operating member properly with reference thereto. Knowing at which number to position each operating member to bring all of the notches 15 immediately below the projections 24, it is easy to obtain the lowering of the bolt and the retraction thereof to unlocking position.

It will be noted that the wings 21 of the operating members 20 are fashioned differently, one having the notch 22 out therefrom while the other has a smooth edge, this being necessary to distinguish which wing shall be the pointer of the operating member over its dial. It is possible to have either wing 21 serve as a pointer, the combination of numbers for the three tumblers being properly made with reference there to, and it is evident that with a plurality of index dials, and double pointers on each operating member, a great variety and number of combinations may be made use of.

The ten depressions or grooves 14 in each of the tumblers make it possible for the user of the device to change thecombination of figures that will work the device at will. The tumbler member 11 is loosely mounted on'the rod 16, and moves therewith only by reason of the seating of the arm 17 in one of the grooves, and the cover plate 6 is normally positioned close enough to the tumblers and the arms 17 that the armscannot unseat. At any time, however,

the cover plate 6 may beremoved and the arms 17 seated in different grooves 14: if

desired, this changing the a combination which will unlock the device aswill be evident. Therdistance between the operating members 20 and the tops of the raised lugs 19 is sufficient to permit movement of the rod 16 so: that arm 17 thereof can be unseated from one groove l l 'and seated in another when the top 6 has been removed. In

this manner, the user of the device may change the combination at will and use any combination desired, changing it when others have at any time become cognizant thereof. -1 This combination door bolt is formed of few parts, has no springs or other mecha 'nism liable to get out of order, and in ap pearanoe onthe door presents the same appearance substantially as the ordinary lock. It is particularly durable and eflicient and can be inanufactured at low cost. Modifications in "structure by I substitution of equivalents, increase or decrease of the number of locking tumblers, and the like may be resorted towithout departing from the p ,cluding all modifications falling properly within their scope.

What I claim as new and desire to secure by Letters Patent is 1. In a device of the character described,

a sliding .bolt, a plurality. of tumblers mounted edgewise to each other below the bolt, means for raising the bolt on rotative movement of a tumbler and for moving the bolt laterally, means for holding the bolt against sliding movement on raising thereof and movement to a certain position, and means for permitting the lowering of the bolt through gravity and thereby rendering the holding 'means inefi'ective upon positioning the tumblers in certain predetermined positions, substantially as described.

2. In a device of the character described, a casing, a bolt mounted therein for sliding movement in either direction from a central position in the casing, said bolt having its ends extending beyond the ends of the casing when incentral position, a cover plate for the casing, a pin projecting from the bolt through an opening in the cover i plate, drop latches pivotally mounted above the said opening andhaving ends extending over the upper portion thereof, the endsof the latches being spaced apart, and means for causingthe elevation of the bolt and pin thereon as the bolt is moved to central position, the pin thereupon seating between the ends of the latches and. holding the bolt against sliding movement in either direction substantially as described.

3. In a device of the character described,

a, casing, a boltnmounted slidably in the upper portion thereof, projecting portions on the under side of the bolt, a series of tumblers, one for each projection rotatively mounted below the bolt, each tumbler having a notch adapted to receive the corresponding projection on the bolt, a cover for the casing, a pin attached to the boltand projecting therefrom through an opening in the cover, drop latches mounted adjacent the said opening and having ends spaced apart, means whereby on movement of the bolt to a certain position, the pin will seat between the said latches and hold the bolt against movement, and means to operate the tumblers into position so that the projections on the bolt will be received by'the notches of the tumblers, thereby moving the pin from between the said latches and freeing the bolt for sliding movement.

4. In a device of the character described,

a bolt mounted for sliding movement, means for elevating said bolt on movement to a certain position, gravity catches pivotally mounted adjacent the bolt, and means attached to the bolt and carriedto a position 4 between the gravity catches on the elevation of the bolt, thereby holding the bolt from movement substantially as described.

being loosely mounted on the rods, and the ends of the rodsseated in a groove in each tumbler, operating members secured to the said rods, a plateprovided with raised index, lugs thereon, said lugs being grouped into a plurality of index dials one for each operating member and positioned adjacent said operating members, and a pair of pointer elements included with each operating member and movable over the raised lugs, said pointers of the operating 'members being shaped differently to distinguish. from eachother.

Inltestimony whereof, I have hereunto affixed my signature in the presence of two witnesses. v

WILLIAM A. BAKER.

itnesses i D. LINKHAM, OLIN A. WVILso Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatents,

- Washington, D. G 

